Grandiflora rose plant named `Machahei`

ABSTRACT

A new variety of grandiflora rose suitable for garden decoration, having flowers of red coloration.

BACKGROUND OF THE INVENTION

This invention relates to a new and distinct variety of GrandifloraRose. The varietal denomination of the new variety is `Machahei`. Theplant is an upright seedling cultivated for outdoor garden decoration.It has as its seed parent the variety known as `Maclocker` and as itspollen parent the variety known as `Macnatdeb`.

SUMMARY OF THE INVENTION

Among the features which distinguish the new variety from otherpresently available and known commercial rose cultivars are thefollowing combination of characteristics: its red flower color, itsstrong petal substance that resists weather marking and its deep greenfoliage. `Machahei` may be asexually propagated by cuttings, budding,grafting, layering or tissue culture.

Asexual reproduction of the new variety by budding as performed in KernCounty, Calif., and Clackamas County, Oreg. shows that the foregoing andother distinguishing characteristics come true to form and areestablished and transmitted through succeeding propagations.

COMPARISON WITH PARENTS

The new rose may be distinguished from its seed parent, `Maclocker` bythe following combination of characteristics: `Machahei` is a redgrandiflora with large flowers while "Maclocker" is a pink blendfloribunda with small flowers. `Maclocker` is heavily petalled withnumerous petalloids hiding the stamens. `Machahei` has an average numberof petals and stamens are visible when the flower is fully open.

The new variety may be distinguished from its pollen parent, `Macnatdeb`by the following combination of characteristics: `MacNatdeb` is a verylarge flowered hybrid tea of 50 or more petals with flower color mediumred on the upper side of the petals and straw yellow on the reverse andthe new variety has about 30 to 35 petals.

BRIEF DESCRIPTION OF ILLUSTRATION

The accompanying photograph illustrates specimens of flowers of the newvariety from bud to full bloom depicted in color as nearly correct as itis possible to make in a color illustration of the character. Throughoutthis specification, color values are based upon the Colour Chart of TheRoyal Horticultural Society of London, England, except where commonterms of color definition are employed.

DESCRIPTION OF THE VARIETY

The following description is of rose plants of the new cultivar grownoutdoors in Wilsonville, Oreg. in the month of October. Phenotypicexpression may vary with environmental, cultural and climaticconditions, as well as differences in conditions of light and soil.

FLOWER

The new variety bears its flowers sometimes singly, usually in clustersof three to five or more per stem. Flowers are borne in regular flat torounded clusters on strong medium to long stems (about 30 to about 50cms.) for the class. Outdoors, the plant blooms very freely andabundantly and nearly continuously during the growing seasons. Theflowers have a slight to moderate spicy fragrance.

BUD

The peduncle is of average length for the class (about 7 to about 10cms.), and usually stiff. It is almost entirely smooth, with very fewstipitate glands, and very few prickles. Peduncle color is between 182Aand 183D.

Before the calyx breaks, the bud is small to medium size for the class(about 1.25 to about 1.33 cms. in diameter at the widest point), mediumin length (about 3 to about 4 cms.), and ovoid in shape with aconspicuous neck. The surface of the bud bears few foliaceous appendagesand stipitate glands, usually with slender foliaceous parts extendingbeyond the tip of the bud equal to 1/2 or more of its length. Bud coloris between 135C and 138D suffused with near 183A giving an overallappearance of brownish red.

The inner surface of the sepals is covered with fine wooly tomentum;sepal margins are lined with a few stipitate glands and hairs.

As the petals open, the bud is medium to large for the class (about 2.5to about 3 cms. in diameter at the widest point), medium length (about 3to about 4 cms.), and pointed to ovoid in form. The color of the undersurfaces of the newly opened petals is between 45A and 46A. The color ofthe upper surfaces of the newly opened petals is between 45B and 46B.The bud opens up well and is generally not prevented from opening bywet, cold, hot or dry weather.

BLOOM

When fully open, the bloom is medium to large for the class, rangingfrom about 8 to about 10 cms. in diameter. Petalage is double with about30 to 35 petals and none or a few petaloids arranged regularly. Whenpartially open, the bloom form is somewhat cupped to high centered, andthe petals are somewhat spiraled to cupped with petal edges somewhatrolled outward. When fully open, the bloom form is moderately flat tocupped, and the petals are more or less loosely cupped with petal edgesrolled outward.

PETALS

The substance of the petals is crisp and petals are of medium thickness.Upper surfaces are very shiny to velvety and under surfaces areamoderately velvety. The outer petals are moderately ovate to obovate inshape with apices somewhat rounded and sometimes notched with one notch.The inner petals are narrowly round to deltoid in shape with apicesmoderately rounded.

NEWLY OPENED FLOWER

The under surface of the outer petals is between 46C and 47B. The uppersurface of the outer petals is between 44B and 45B.

The under surface of the intermediate petals is between 46D and 47C. Theupper surface of the intermediate petals is between 43B and 43C.

The under surface of the inner petals is between 45 D and 46C. The uppersurface of the inner petals is between 43A and 44A.

The general tonality of the newly opened flower is between 43D and 44B.

THREE DAY OLD FLOWER

The under surface of the outer petals is between 47A and 46D. The uppersurface of the outer petals is between 44B and 45B.

The under surface of the inner petals is between 47B and 47D. The uppersurface of the inner petals is between 44B and 45C. Petal color at pointof attachment is near 15C.

The general tonality of the three-day-old flower is between 44A and 44C.Stamens are evident when bloom is fully open.

The petals usually drop off cleanly on the spent bloom fading to 48Bonly in wet weather on exposed petal edges.

In September, blooms on the bush growing outdoors generally last fromthree to five or more days. Cut roses grown outdoors and kept at normalindoor living temperatures generally last from three to five days.

MALE REPRODUCTIVE ORGANS

Stamens are average to many in number and are arranged regularly aboutthe pistil and are shorter than the pistil. The filaments, (44C) areshort in length, most with anthers. The anthers are moderately small forthe class and all open approximately at the same time. Anther color isnear to 11B when immature and near to 11A at maturity. Pollen is near to20A in color.

FEMALE REPRODUCTIVE ORGANS

Pistils vary in number (approximately 40-50). The styles are moderatelyeven, average to long in length, average to heavy in caliper, andloosely separated. Stigma color is near to 11C. Style color is near 47C.Ovaries are ususally few, (8-12) all enclosed in the calyx.

No hips are observed on this variety when grown in Wilsonville, Oreg.Peduncles become brown and necrotic following petal fall.

FOLIAGE

The compound leaves are usually comprised of three to seven leaflets andare borne abundantly. The leaves are medium for the class, (about 16 toabout 20 cms. in length and about 11 to about 14 cms. in width at thewidest point), leathery in texture, and glossy in finish. The leafletsare medium for the class (about 5 to about 7 cms. in length and about3.5 to about 5 cms. in width at the widest point), shaped oblong withmoderately acute apices and round bases. Their margins are simplyserrate.

The upper surface of the mature leaf is between 136A and 139A. The undersurface of the mature leaf is between 138A and 138B. The upper surfaceof the young leaf is near to 187A. The under surface of the young leafis near to 183A.

The rachis upper side is smooth and shallowly grooved with somestipitate glands on the edges of the grooves. The under side of therachis is somewhat smooth with few small prickles.

The stipules are medium to long in length with medium width and mediumstraight points that usually turn out at an angle of more than 45degrees.

The plant displays above average degree of resistance to powdery mildewand blackspot and rust as compared to other commercial varieties grownunder comparable conditions in Wilsonville, Oreg.

GROWTH

The plant has an upright low to medium height habit (to about 110 cms.in height and about 50 to about 60 cms. spread at the widest point),with very full branching. It displays vigorous growth.

The color of the major stems is between 138A and 139B. They bear manylarge prickles which are medium length to long for the class (about 0.75to about 2.25 cms). The large prickles are hooked slightly downward witha long narrow rounded base; prickle color is between 152B and 152C. Themajor stems bear many small prickles of similar shape and coloration andwhich are between 152B and 52C in color. There are no hairs.

The color of the branches is between 138A and 139B. They bear many largeprickles, which are of similar size and shape to the large prickles onthe major stems; prickle color is between 152B and 152C. The branchesbear many small prickles of similar shape and coloration and which arebetween 152B and 152C in color. There are no hairs.

The color of the new shoots is between 141D and 143C sometimes lightlysuffused with near to 183A. They bear many large prickles, which are ofsimilar size and shape to the large prickles on the major stems; pricklecolor is between 183A and 185A. The shoots bear many small prickles ofsimilar shape and coloration and which are between 183A and 185A incolor. There are no hairs.

I claim:
 1. A new and distinct rose plant of the variety substantiallyas shown and described.